Akwat, then what do we say about the different views of Catholics, Baptists, and Mormons? To put it roughly, Catholics believe priests are a necessary conduit to God, that saints may be prayed to, that relics and idols have some importance, etc. That isn't reconcilable with the protestant view of God.

There is no denying the major conceptual differences between the monotheistic religions but despite the divergences, they do have a common history. At what point do Orthodox and Reformed Jews believe in different gods? At what point to Catholics and evangelicals? Sunnis and Shi'ites?